Feeding-gage for printing-presses.



No. 745,318. PATENTBD DEC. 1, 1903. W. H. BRADLEY. FEEDING GAGE FORPRINTING PRESSES.

APPLICATION FILED JAN. 10. 1903.

I0 MODEL.

, of Massachusetts,

said body portion,

UNITED STATES sawed beoe'mber 1, 1903.

PATENT OEEIcE.

FEEDING-GAGE FOR PRlNTmc-PREssEs.

SPECIFICATION formingpart of Letters Patent No. 745,318, datedApplication filed January 10 1903. Serial To all whom it may concern: IBe it known that I, WILLIAM H. BRADLEY, a citizen of the United States,and a resident of Pittsfield, in'the county of Berkshire and Stateuseful Improvement in Feeding- Gages for PrintingPresses, of which thefollowing is a specification. v

My invention relates to an improvement in feeding-gages forprinting-presses of the platen type, and more particularly to that classof feeding-gages which are adjustably secured to the tympan-paper andmay be adjusted with respect to the sheets to be fed.

The objects of my invention are to provide afeed-gage adjust-ablyattachable to tympansheet and adapted to accurately register the sheetsto be fed, which gage shall be easily attached to and detached from thetympansheet, and one which can be secured thereto without thepossibility of its once slipping after being secured, as well as onewhich will not warp or Wrinkle the tympan-sheet or in any wise injurethe tympan-packing, and yet can be adjusted with respect to the size andposition of the fed sheets without being removed from engagement withthe tympansheet.

My invention comprises, in combination with a tympan-sheet, a head orstud and a shank removably secured thereto.

In the accompanying drawings, Figure 1 is a perspective view of myinvention secured to the tympan-sheet. Fig. 2 is a vertical sectiontaken on line 0900 of Fig. 1, and Fig. 3 is a view of the partsdetached.

Arepresents the tympansheet,of the usual conformation and provided withY shaped slots 1 l.

B indicates the head or stud of my improved feed-gage. As shown, thisstud consists of a circular body portion 2, concave on its lower face 3and provided with a screw-threaded bore or aperturewl, located centrallyof the stud. Concentric with the bore or aperture is a recessed portion5, forming a shoulder 6,

the outer edge of which merges into the concave lower face 3. The bodyportion 2 supports a circular head 7 of larger diameter than and whichhead may be provided with a milled or knurled circumhave invented a newand December 1, 1903.

Iio.138,450. (No model.)

i ference 8 for a purpose hereinafter to be set forth. This head is alsoprovided with an aperture coincident with the aperture in thebodyportion. A shank O completes the feedgage. This shankcomprisesabase9 circular or disk-like in form, if desired, not eccentric and providedwith a threaded stem 10,having a kerf in its upper end for the receptionof a screw-driver or other implement, the stem being received in thethreaded bore 4 of the stud.

In operation the shank is inserted through the slot 1 in thetympan-sheet, the base 9 resting upon and supported by the platen, thestem projecting through the slot and above the tympansheet. The stud isthen secured upon the stem, the concave lower face of the body portion,together with the annular recess, bearing against the material of whichthe tympan-sheet is composed, the body portion being of greater diameterthan the width of the Y- shaped slot and biting thereinto, or, in otherwords, the tympan-sheet is securely clamped between the base of theshank portion and the lower face of the body portion, the tympan-sheetbeing forced into the concavity therein and into the annular recess.When it is desired to change the gage to enable it to register fedsheets of diiferent size, the stud is merely loosened on the stem thegage shifted bodily to the desired position, where it is again securedin place. The

object fulfilled by the Y-shaped slots is to permit a wider range ofadjustment than would otherwise be possible. The fed sheets contact withthe body portion of the gage and are prevented from accidental slippingover the gage or other movement by means of the head, which extendsbeyond the body portion. The object of the knurled edge (by which thegage is loosened and moved in the slot and the stud loosened from theshank) is to enable the operator to more easily loosen the device fromand clamp it to the tympansheet.

From the foregoing it will be seen that my improved gage is strong anddurable, simple, and easily operated, the two portions of the gage, (thestud and the shank,) set tightly and firmly together at the outer edge,by means of the concaved portion before deand scribed, preventing thefed sheets from slipping beneath the stud, and the gage is easily andquickly adjusted.

It is evident that slight changes might be made in the form andarrangement of the several parts described without departing from thespirit and scope of myinvention, and hence I do not wish to limit myselfto the exact construction herein shown, but may wish from time to timeto make such changes as are herein referred to in either form orarrangement, orboth, of the several parts herein described.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, isl 1. The combination with atympan-sheet having slots formed therein, of a feed-gage comprising astud and a shank, the stud consisting of a body portion, the lower faceof which is concaved and of a diameter greater than the width of theslotin the tympan-sheet, a head of greater diameter than the bodyportion carried thereby, the shank consisting of a base and a stemextending therefrom, the

stem removably received in the body portion of the stud, thetympan-sheet being forced into the concavity in the lower face of thebody portion of the stud.

2. The combination with a tympan-sheet having a slot formed therein, ofa feed-gage comprising a stud and a shank, the stud consisting of anapertured body portion of greater diameter than the width of the slot,the lower face of the body portion being concaved and having a recessformed centrally of the concavity, and a head of greater diameter thanthe body portion carried by the body portion, the shank comprising abase and a stem extending therefrom, the stem received within theaperture in the body portion of the stud, that portion of thetympansheet on either side of the slot adapted to be received andtightly held in the recess and concavity in the lower face of the bodyportion.

3. The combination with a tyn1pan-sheet having a Y- shaped slot formedtherein, of a feed gage comprising only a stud and a shank, the studconsisting of an apertured body portion the lower face of which isconcaved and of greater diameter than the width of the slot, a head oflarger diameter than the body portion and carried thereby, the shankcomprising a base and a stem, the latter receivable in the aperturedstud, tho tympansheet being tightly received in the concavity in thestud, the periphery of the lower face of the stud bearingtightly againstthe tympan-sheet.

at. The combination with a tympan-shect, of a gage composed of but twomembers, a stud and a shank, the lower face of the stud being concaved,the shank receivable in the stud, the periphery of the lower face of thestud bearing tightly against the tympansheet.

5. The combination with a tympan-sheet having an aperture therein, of agage comprising a stud and a shank, the lower face of the stud beingconcaved, the tympan-sheet being tightly received in the concaved faceof the stud, the outer lower edge of the stud bearing tightly againstthe tympan-sheet.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

WILLIAM H. BRADLEY. \Vitnesses:

Rosn L. ORoWLEY, J OSEPH WARD LEWIS.

